An organic light-emitting diode (OLED) display is disclosed. In one aspect, the OLED display includes a plurality of scan lines extending in a first direction and a plurality of data lines extending in a second direction crossing the first direction. The OLED display also includes a plurality of pixels electrically connected to the scan lines and the data lines and arranged in a plurality of rows and columns, each pixel including an OLED and a thin film transistor electrically connected to the OLED. The OLED display further includes a plurality of driving voltage lines that supply a driving voltage to each of the pixels and extend in the second direction, wherein an active layer of a thin film transistor serpentinely extends along an inclined direction with respect to the second direction.